The Study of the Current During Double Spot Welding

Abstract

Spot welding is widespread across various manufacturing industries. During double spot welding, the welding current decreases due to the loss, through the plate from the electrodes, of a part of the current cut off by the source. In this paper, an equivalent electrical scheme is proposed and calculation relations for the branched currents are established. Following numerical calculations, the influences of different factors on the necessary welding current are established and technological recommendations are made to reduce current losses.